package com.heima.search.service.impl;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.search.dtos.HistorySearchDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.search.pojos.ApUserSearch;
import com.heima.search.service.ApUserSearchService;
import com.heima.utils.thread.AppThreadLocalUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.List;

@Service
@Slf4j
public class ApUserSearchServiceImpl implements ApUserSearchService {

    @Autowired
    private MongoTemplate mongoTemplate;
    /**
     * 保存用户历史搜索记录
     * @param keyword
     * @param userId
     */
    @Override
    @Async
    public void insert(String keyword, Integer userId) {
        //1.查询当前用户搜索的关键词是否存在
        ApUserSearch apUserSearch = mongoTemplate.findOne(Query.query(Criteria.where("userId")
                .is(userId).and("keyword").is(keyword)), ApUserSearch.class);

        //2.存在则更新最新时间
        if(apUserSearch != null){
            apUserSearch.setCreatedTime(new Date());
            mongoTemplate.save(apUserSearch);
            return;
        }

        //3.不存在则新增，判断当前历史记录是否超过10条记录
        apUserSearch = new ApUserSearch();
        apUserSearch.setUserId(userId);
        apUserSearch.setKeyword(keyword);
        apUserSearch.setCreatedTime(new Date());

        List<ApUserSearch> userSearchList = mongoTemplate.find(Query.query(Criteria.where("userId").is(userId))
                .with(Sort.by(Sort.Direction.DESC,"createTime")),ApUserSearch.class);

        if(userSearchList == null || userSearchList.size() < 10){
            mongoTemplate.save(apUserSearch);
        }else{
            ApUserSearch lastUserSearch = userSearchList.get(userSearchList.size() -1); //获取最后一条记录
            mongoTemplate.findAndReplace(Query.query(Criteria.where("id").is(lastUserSearch.getId())),apUserSearch);
        }

    }

    /**
     * 加载搜索历史
     * @return
     */
    @Override
    public ResponseResult load() {
        //获取当前用户
        ApUser user = AppThreadLocalUtil.getUser();
        if(user == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }

        List<ApUserSearch> apUserSearchList = mongoTemplate.find(Query.query(Criteria.where("userId")
                        .is(user.getId()))
                .with(Sort.by(Sort.Direction.DESC,"createTime")), ApUserSearch.class);

        return ResponseResult.okResult(apUserSearchList);
    }

    /**
     * 删除历史记录
     * @param dto
     * @return
     */
    @Override
    public ResponseResult del(HistorySearchDto dto) {

        ApUser apUser = AppThreadLocalUtil.getUser();

        if(apUser == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }

        if(dto == null || dto.getId() == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        mongoTemplate.remove(Query.query(Criteria.where("userId").is(apUser.getId()).and("id").is(dto.getId())),ApUserSearch.class);

        return ResponseResult.okResult("删除成功");
    }
}
